Patent US2927035A successfully refreshed from Google Patents.
US2927035A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Colored shaped structures from viscose and process for their manufacture
Assignee: BASF Schweiz AG
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Filing: 1958-03-20
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Granted: 1960-03-01
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Expires: 1978-03-20
Abstract
No abstract record available.
Inventors
- 👤 Wegmann Jacques
- 👤 Becker Carl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:25
CPC Classifications
C; C09; C09B; C09B62/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
62 words
A PROCESS FOR THE MANUFACTURE OF COLORED SHAPED STRUCTURES FROM VISCOSE, WHEREIN THERE IS DISSOLVED IN A VISCOSE SPINNING SOLUTION AN ORGANIC DYESTUFF WHICH IS SOLUBLE IN AN AQUEOUS ALKALINE MEDIUM AND WHICH CONTAINS A REACTIVE SUBSTITUENT CAPABLE OF BINDING THE DYESTUFF TO THE HYDROXYL GROUP OF THE CELLULOSE XANTHATE MOLECULE, AND THE SO-COLORED SPINNING SOLUTION IS SPUN IN A COAGULATING BATH.
Claim 2
Dependent Claim
62 words
A PROCESS FOR THE MANUFACTURE OF COLORED SHAPED STRUCTURES FROM VISCOSE, WHEREIN THERE IS DISSOLVED IN A VISCOSE SPINNING SOLUTION AN ORGANIC DYESTUFF WHICH IS SOLUBLE IN AN AQUEOUS ALKALINE MEDIUM AND WHICH CONTAINS A REACTIVE SUBSTITUENT CAPABLE OF BINDING THE DYESTUFF TO THE HYDROXYL GROUP OF THE CELLULOSE XANTHATE MOLECULE, AND THE SO-COLORED SPINNING SOLUTION IS SPUN IN A COAGULATING BATH.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-03-01 | 1963-08-31 | 1964-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-01 | 1967-08-31 | 1968-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-01 | 1971-08-31 | 1972-03-01 | $7700.00 | Window Closed / Lapsed |